TWI416394B - Touch panel structure - Google Patents

Abstract

The invention provides an improved structure of touch panel, which includes a substrate having different surfaces disposed thereon a first induction layer and a second induction layer, respectively. Each of the first and second induction layers includes a plurality of arranged first and second induction wires. Each of the first and second induction wires includes a plurality of equal-area first and second induction blocks, in between which are respectively connected with a first connection segment and a second connection segment. The first and second induction wires are arranged in a mutual staggered manner and the first and second connection segments are used as the equal-area overlapping region, thereby reducing the blank regions of the first and second layers, enhancing the induction area inside the touch panel, and simultaneously decreasing the blank area to reduce the optical difference. Moreover, the first and second connection segments are of equal area to generate the capacitance effect with the same capacitance values so as to avoid the situation of inaccuracy or misjudgment generated during the touch control.

Description

Touch panel structure

A "touch panel", in particular, a touch panel structure improvement that improves the sensing area inside the touch panel and reduces the area of the blank area to reduce optical contrast.

According to the advancement of touch panel technology, as well as the improvement of product performance and component quality, various types of touch panels have been widely used in various electronic products.

Please refer to FIG. 1 for an exploded perspective view of a conventional touch panel. As shown in the figure, the touch panel 1 has a substrate 10, and an X-axis sensing layer 11 and a top surface and a bottom surface thereof are respectively disposed. The Y-axis sensing layer 12 has a plurality of X-axis sensing lines 111 arranged in a plurality, and the Y-axis sensing layer 12 has a plurality of Y-axis sensing lines 121 arranged, the X-axis sensing lines 111 and the Y The axis sensing lines 121 are respectively connected to a control circuit (not shown), and the X-axis sensing layer 11 is covered with a protective layer 13 for protecting the X-axis sensing layer 11 from external contact damage. However, its thickness is extremely thin and does not affect the operation of the touch panel 1.

When the touch panel 1 is in operation, the protective layer 13 is contacted by a finger or a conductor, and a capacitive effect is generated at the moment of contact. By changing the capacitance value, the finger or the conductor can be positioned at the contact position of the touch panel 1 . That is, the X-axis sensing lines 111 sense that the finger or the conductor is located at the X-axis position of the touch panel 1, and the Y-axis sensing lines 121 The sensing finger or the conductor is located at the Y-axis position of the touch panel 1 , so that the X-axis sensing layer 11 and the Y-axis sensing layer 12 are combined to sense the position of the finger or the conductor at the touch panel 1 due to capacitive touch The control board can be input by a finger, and has the convenience of an input operation, and the input operation does not need to be touched, and the touch panel 1 does not have the disadvantage of being damaged by the reverse stress deformation.

However, between the X-axis sensing lines 111 and the Y-axis sensing lines 121, the grid-like orthogonal arrays are mainly arranged. In addition to the overlapping regions, blank areas are easily generated in other portions, and overlapping regions and blank regions are likely to cause touch. The misjudgment of the position, the decrease in accuracy, and the serious optical contrast in the blank area are lacking. Therefore, the manufacturer has improved the structure of the touch panel 1.

For example, in the Republic of China Patent Gazette, the "capacitive touch panel" of the publication No. M338404, which is sequentially provided with a protective layer, a plurality of columns of conductive patterns, an insulating layer and a plurality of rows of conductive patterns, each of the plurality of rows of conductive patterns The row of conductive patterns includes a plurality of first conductive patterns, the diagonal lines of the first conductive patterns are unequal in length, and the first conductive patterns are electrically connected laterally and electrically connected to a lateral electrode, and the plurality of rows are electrically conductive The pattern is the same as the plurality of columns of conductive patterns, each row of conductive patterns includes a plurality of second conductive patterns, the diagonal lines of the second conductive patterns are unequal lengths, and the second conductive patterns are electrically connected in a longitudinal direction, and The longitudinal electrodes are electrically connected.

However, the "capacitive touch panel" can increase the flexibility of the circuit layout. However, after the plurality of rows of conductive patterns overlap with the plurality of rows of conductive patterns, there is no space between the first conductive patterns and the second conductive patterns. Therefore, when a finger or a conductor contacts the protective layer, and the contact point is located at the When the first conductive pattern is adjacent to the second conductive patterns, the externally connected control circuit cannot correctly determine the contact position, resulting in a false positive or a decrease in accuracy.

In addition, as in the Republic of China Patent Gazette, the "capacitive touch panel" of the publication No. M342558 is a transparent plate body which is integrally laminated by a base layer, a sensing layer and a surface layer, and the sensing layer is interlaced in a matrix. a plurality of X-axis traces and Y-axis traces are provided, and the front ends of the X-axis traces and the Y-axis traces are respectively provided with contacts and electrically connected to the silver guides disposed at the edge of the panel, and are connected to a signal output cable. The sensing signal of the capacitive touch panel can be transmitted to the subsequent signal processing circuit via the signal output cable, wherein the plurality of X-axis traces and the Y-axis trace are disposed on the same plane, so that the individual X-axis The sensing units on the track are connected to each other, and the sensing units on the individual Y-axis tracks are spaced apart from each other, and a bridge structure is arranged between any two adjacent adjacent sensing units on the respective Y-axis tracks. Having two adjacent arrays of sensing elements on individual Y-axis traces connected to each other and insulated from the Y-axis trace portion between the two adjacent arrays of sensing elements by X-axis and Y Axial sense Traces disposed on the same plane, laid so that the position of the sensing accuracy of the stitch to enhance the effectiveness of the touchpad sensing sensitivity and accuracy.

However, although the "capacitive touch panel" can improve the sensitivity and accuracy, the plurality of X-axis traces and the Y-axis trace are separated by a bridge structure and disposed on the same plane, when the touch panel is manufactured. The production process will be too complicated and further reduce the yield. At the same time, the bridge structure used in the touch panel is easy to be deformed or damaged due to the force of the touch, which affects the entire touch. The accuracy of the panel.

In view of the above needs, the inventors have carefully studied and accumulated many years of experience in the business, and finally designed a new "touch panel structure improvement".

An object of the present invention is to provide an improvement in the structure of a touch panel that improves the sensing area inside the touch panel.

Still another object of the present invention is to provide an improved touch panel structure that improves the accuracy of a touch panel when touched.

Another object of the present invention is to provide an improved touch panel structure that reduces the optical contrast of the touch panel between the blank area and the sensing block.

In order to achieve the above object, the "touch panel structure improvement" of the present invention has a touch panel, the control panel has a substrate, a first sensing layer disposed on the first surface of the substrate, and a first sensing layer disposed on the substrate a second sensing layer on the two surfaces, and a protective layer disposed on the surface of the first sensing layer.

The first sensing layer has a plurality of first sensing lines arranged in a plurality, and the first sensing lines respectively have a plurality of first sensing blocks, and the sensing blocks are connected by a first connecting section.

The second sensing layer has the same second sensing line, and each second sensing line has a plurality of second sensing blocks connected by the second connecting section, and the second sensing blocks are Connected by a second connecting section.

The first sensing layer is disposed on the first surface of the substrate, and the second sensing layer is disposed on the second surface of the substrate, and the first sensing lines and the second sensing lines are staggered with each other, meaning The first sensing blocks of the first sensing lines, the second sensing blocks of the second sensing lines are arranged in a matrix or array, and the first connecting segments and the first connecting segments The second connecting section is an overlapping area, and the first connecting section and the second connecting section are circular, W-shaped, V-shaped, U-shaped M-shaped, N-shaped, etc. One of a Z-shaped, wavy, continuous curved or non-linear continuous meandering shape, and the first sensing block and the second sensing block are circular, parallelogram, rhombus, square of equal area Or one of the polygons.

Thereby, the first sensing blocks are distributed on the first surface of the substrate, and the second sensing blocks are distributed on the two surfaces of the substrate, and the first connecting segments are Waiting for the second connecting section to be an overlapping area, and uniformly covering the substrate, Reducing the blank area of the first sensing layer and the second sensing layer, because the area of the blank area is reduced, the optical contrast is reduced, and the touch area of the substrate is increased, and if the touch point falls on the first When the connecting section and the second connecting section are equal, the first connecting section and the second connecting section are equal in area, and the same capacitive effect can be generated, and one of the touch panel external connections is controlled. When the circuit analyzes and judges the touch point, it does not misjudge or inaccurate.

In order for your review board to have a clear understanding of the contents of the present invention, please refer to the following description.

Please refer to FIG. 2 and FIG. 3 for an exploded perspective view and a partial schematic view of a preferred embodiment of the present invention. As shown in the figure, the "touch panel structure improvement" of the present invention has a touch panel 1 The invention comprises a substrate 20, a first sensing layer 21, a second sensing layer 22 and a protective layer 23, wherein the substrate 20 is mainly glass, polycarbonate (PC), amorphous ring polycondensation. Resin (ARTON), Polyether Sulfone (PES), Polyether Olefin (ZEONOR), Tri Acetyl Cellulose TAC, Polyethylene terephthalate (PET) a material such as polymethyl methacrylate (PMMA) having a first surface 201 and a second surface 202. When the first surface 201 is a top surface, the The second surface 202 is a bottom surface. Conversely, when the first surface 201 is a bottom surface, the second surface is a top surface 202.

The first sensing layer 21 is lndium Tin Oxide (ITO), Antimony Tin Oxide (ATO), Aluminium Zinc Oxide (AZO) or selected from the group consisting of titanium, zinc, zirconium and hafnium. One of the group of metal oxides composed of indium, tin, aluminum, and antimony has a plurality of first sensing lines 211 arranged in a plurality, and the first sensing lines 211 respectively have a first area of a plurality of equal areas The sensing block 212 is connected to the first sensing block 212 by a first connecting section 213, and the first connecting sections 213 are in the shape of an equal area. In this embodiment, the area is equal. The circular shape is used for description, and the other may be one of W type, V type, U type M type, N type, Z type, wavy shape, continuous curved shape or non-linear continuous meandering shape, and the first induction In the present embodiment, the block 212 is illustrated by a diamond, and the other may be one of a circle, a parallelogram, a diamond, a square or a polygon.

The second sensing layer 22 is Indium Tin Oxide (ITO), Antimony Tin Oxide (ATO), Aluminium Zinc Oxide (AZO) or selected from the group consisting of titanium, zinc, zirconium and hafnium. One of the group of metal oxides composed of indium, tin, aluminum, and antimony has a plurality of second sensing lines 221 arranged in a plurality, and the second sensing lines 221 respectively have a second area of a plurality of equal areas Inductive block 222, and the sensing blocks are connected by a second connecting section 223, and the The second connecting sections 223 are equal in shape. In this embodiment, the circular area of the equal area is used for description. Others may be W-shaped, V-shaped, U-shaped M-shaped, N-shaped, and Z-shaped. One of the wavy, continuous curved or non-linear continuous meandering shapes, and the second sensing blocks 222 are illustrated in the form of diamonds in the present embodiment, and the other may be parallelograms, diamonds, squares or polygons. One of them.

The protective layer 23 is mainly composed of Cyclo-Olefin Copolymers (COC), cerium oxide (SiO2), tantalum nitride (SiNx) or plastic.

When the touch panel 1 is combined, the first sensing layer 21 is disposed on the first surface 201 of the substrate 20, the second sensing layer 22 is disposed on the second surface 202 of the substrate 20, and the first sensing layer 21 is The first sensing line 211 and the second sensing lines 221 of the second sensing layer 22 are electrically connected to an external control circuit (not shown), and the protective layer 23 is disposed on the first sensing layer. The protective layer 23 is configured to protect the first sensing layer 21 from being deformed or damaged by the touch of the finger or the outer conductor when the touch panel 1 is touched, and the thickness of the protective layer 23 is It is extremely thin and does not affect the operation of the touch panel 1.

After the touch panel 1 is assembled, the first sensing lines 211 and the second sensing lines 221 are respectively located on the first surface 201 and the second surface 202 of the substrate 20, and are staggered with each other to make the first a sensing block 212 and the second sensing regions The blocks 222 are arranged in a matrix or an array. The first sensing lines 211 and the second sensing lines 221 are overlapped with the second connecting sections 223 and the second connecting sections 223. It should be noted that, in addition to each of the first sensing blocks 212 being equal in area, each of the second sensing blocks 222 being equal in area, the first sensing blocks 212 and the second sensing blocks 222 must also be equal in area, the same, except that each of the first connecting sections 213 is equal in area, and each of the second connecting sections 223 is equal in area, the first connecting sections 213 and the The second connecting section 223 must also be of equal area.

Thereby, the first sensing lines 211 of the first sensing layer 21, the first sensing blocks 212, the first connecting segments 213, and the second sensing lines of the second sensing layer 22 The second sensing block 222 and the first connecting segments 223 are uniformly filled with the first surface 201 and the second surface 202 of the substrate 20 respectively, and the substrate 20 is disposed on the first sensing layer. After the second sensing layer 22 is stacked, the blank area generated by the overlap between the first sensing layer 21 and the second sensing layer 22 can be reduced, and the touch area of the substrate 20 can be improved. When the first connecting section 213 and the second connecting section 223 are located, since the first connecting section 213 and the second connecting section 223 are equal in area, the capacitive effect is generated. Similarly, the control circuit that externally connects the touch panel 2 does not misjudge or inaccurate when analyzing and determining the touch point.

In the embodiment, the first sensing blocks 212 of the first sensing layer 21 are sensed by the X-direction touch point, and the second sensing blocks 222 of the second sensing layer 22 are touched by the Y direction. The first sensing block 212 is sensed by the Y-direction touch point, and the second sensing block 222 is the X-direction touch point sensing, which means the first sensing layer. The X and Y axis directions represented by 21 and the second sensing layer 22 do not affect the structural features of the present case.

In addition, in addition to the combination sequence described in this embodiment, the first sensing layer 21 can be disposed on the second surface 202 of the substrate 20, and the second sensing layer 22 is disposed on the first surface 201 of the substrate 20. Then, the protective layer 23 is disposed on the surface of the second sensing layer 22 .

Please refer to FIG. 2 and FIG. 4 for an exploded perspective view and a partial schematic view of a preferred embodiment of the present invention. As shown in the figure, in the present embodiment, the first sensing blocks 212, the first The second sensing block 222 may be set to one of a parallelogram of an equal area, a square or a polygon, in addition to the aforementioned "second figure" being set to a diamond of equal area.

Please refer to FIG. 2 and FIG. 5 for an exploded perspective view and a partial schematic view of a preferred embodiment of the present invention. As shown in the figure, in the present embodiment, the first connecting sections 213, the first The second connecting section 223 may be set to an equal-area W-shaped, V-shaped, U-shaped M-shaped, N-shaped, except that the aforementioned "second drawing" is set to a circular shape of equal area. One of type, Z-shaped, wavy, continuous curved or non-linear continuous meandering.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention All should be covered by the patent of the present invention.

In summary, the "touch panel structure improvement" of the present invention has the patented invention and the use value of the industry; the applicant applies for an invention patent to the bureau in accordance with the provisions of the patent law.

1‧‧‧ touch panel

10‧‧‧Substrate

11‧‧‧X-axis sensing layer

111‧‧‧X-axis induction line

12‧‧‧Y-axis sensing layer

121‧‧‧X-axis induction line

13‧‧‧Protective layer

2‧‧‧ touch panel

20‧‧‧Substrate

201‧‧‧ first surface

202‧‧‧ second surface

21‧‧‧First sensing layer

211‧‧‧First induction line

212‧‧‧First sensing block

213‧‧‧First connection section

22‧‧‧Second sensing layer

221‧‧‧Second induction line

222‧‧‧Second sensing block

223‧‧‧Second connection section

23‧‧‧Protective layer

FIG. 1 is an exploded perspective view of a conventional touch panel.

Figure 2 is an exploded perspective view of a preferred embodiment of the present invention.

Figure 3 is a partial schematic view of a preferred embodiment of the present invention.

Figure 4 is a partial schematic view 2 of a preferred embodiment of the present invention.

Figure 5 is a partial schematic view 3 of a preferred embodiment of the present invention.

2‧‧‧ touch panel

20‧‧‧Substrate

201‧‧‧ first surface

202‧‧‧ second surface

21‧‧‧First sensing layer

211‧‧‧First induction line

212‧‧‧First sensing block

213‧‧‧First connection section

22‧‧‧Second sensing layer

221‧‧‧Second induction line

222‧‧‧Second sensing block

223‧‧‧Second connection section

23‧‧‧Protective layer

Claims (15)

A touch panel structure, the touch panel has a substrate, a first sensing layer disposed on the first surface of the substrate, and a second sensing layer disposed on the second surface of the substrate, wherein: The first sensing layer has a plurality of first sensing lines arranged in a plurality, and the first sensing lines respectively have a plurality of first sensing blocks of equal area, and the first sensing blocks have a first connection of a circular equal area The second sensing layer has a plurality of second sensing lines arranged in a plurality, and the second sensing lines respectively have a plurality of second sensing blocks of equal area, and the second sensing blocks have a circular shape, etc. The second connecting sections of the area are connected, and the first sensing lines and the second sensing lines are staggered with each other, and the first connecting sections are overlapped with the second connecting sections. The first connecting sections and the second connecting sections are of equal area. The touch panel structure of claim 1, wherein the first sensing block and the second sensing block are one of an equal area of a circle, a parallelogram, a diamond, a square or a polygon. By. The touch panel structure of claim 1, wherein the first sensing lines and the second sensing lines are staggered with each other, and The first sensing blocks and the second sensing blocks are arranged in a matrix or an array. The touch panel structure of claim 1, wherein the first sensing layer and the second sensing layer are Indium Tin Oxide (ITO) and Antimony Tin Oxide (ATO). Aluminium zinc (Aluminium Zinc Oxide; AZO) or one of a group of metal oxides selected from the group consisting of titanium, zinc, zirconium, hafnium, indium, tin, aluminum, and antimony. The touch panel structure of claim 1, wherein a surface of the first sensing layer is provided with a protective layer. The touch panel structure according to claim 5, wherein the protective layer is Cyclo-Olefin Copolymers (COC), cerium oxide (SiO2), tantalum nitride (SiNx) or plastic. One of them. The touch panel structure according to claim 1, wherein the substrate is glass, polycarbonate (PC), amorphous cycloolefin resin (ARTON), polyether oxime (Polyether Sulfone, PES), ZEONOR, Tri Acetyl Cellulose TAC, Polyethylene Terephthalate (Polyethylene) One of terephthalate, PET) or polymethyl methacrylate (PMMA). A control panel structure, the touch panel has a substrate, a first sensing layer disposed on the first surface of the substrate, and a second sensing layer disposed on the second surface of the substrate, wherein: The first sensing layer has a plurality of first sensing lines arranged in a plurality, and the first sensing lines respectively have a plurality of first sensing blocks of equal area, and the first sensing blocks are curved and equal in area The connecting sections are connected, and the second sensing layer has a plurality of second sensing lines arranged in a plurality, the second sensing lines respectively having a plurality of second sensing blocks of equal area, and the second sensing blocks are bent by a second The second connecting sections of the same area are connected, and the first sensing lines and the second sensing lines are staggered with each other, and the first connecting sections and the second connecting sections are For the overlapping area, the first connecting sections and the second connecting sections are equal areas. The touch panel structure of claim 8, wherein the first sensing block and the second sensing block are one of an equal area of a circle, a parallelogram, a diamond, a square or a polygon. By. The touch panel structure of claim 8, wherein the The first connecting section and the second connecting section are one of a W-shaped, a V-shaped, a U-shaped M-type, an N-shaped, a Z-shaped, a wavy shape, a continuous curved shape, or a non-linear continuous meandering shape. The touch panel structure of claim 8, wherein the first sensing lines and the second sensing lines are staggered with each other, and the first sensing blocks and the second sensing The blocks are arranged in a matrix or array. The touch panel structure of claim 8, wherein the first sensing layer and the second sensing layer are Indium Tin Oxide (ITO) and Antimony Tin Oxide (ATO). Aluminium zinc (Aluminium Zinc Oxide; AZO) or one of a group of metal oxides selected from the group consisting of titanium, zinc, zirconium, hafnium, indium, tin, aluminum, and antimony. The touch panel structure of claim 8, wherein the surface of the first sensing layer is provided with a protective layer. The touch panel structure according to claim 13, wherein the protective layer is Cyclo-Olefin Copolymers (COC), cerium oxide (SiO2), tantalum nitride (SiNx) or plastic. One of them. The touch panel structure according to claim 8, wherein the substrate is glass, polycarbonate (PC), amorphous cycloolefin resin (ARTON), polyether oxime (Polyether Sulfone, PES), ZEONOR, Tri Acetyl Cellulose TAC, Polyethylene terephthalate (PET) or PolyMethyl Meth Acrylate (PMMA) One of them.